VISION ACADEMY

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A substance that turns moist starch iodide paper blue.

• HCl
• H2S
• Cl2
• CO2

Which solution will you use to distinguish between Sodium Nitrate & Sodium Chloride salt solutions ?

• Ammonium sulphate
• Barium chloride
• Sodium chloride
• Silver nitrate

Identify the anion present in the Compound X which on heating with copper turnings & conc. sulphuric acid liberates a reddish brown gas.

• SULPHATE
• CARBONATE
• SULPHITE
• NITRATE

Identify the anion present in a solution of compound Y which when treated with silver nitrate solution gives a white precipitate which is soluble in excess of ammonium hydroxide solution.

• SULPHATE
• CARBONATE
• CHLORIDE
• NITRATE

Gas Q turns moist lead acetate paper silvery black. Identify Q

• H2S
• Cl2
• NO2
• HCl